Update README.md

Fixes for crashes on Windows, Linux, and Mac.

Updating GitHub action.

Fixes to export in SFX Tool.

Fixing build script to include new shared Sprites folder.

Cleaning up API examples and added support for exporting custom color…

…s in paint tool.

Fixing build to support TinyCard project.

Fixing bugs in the Workspace Tool around copying, moving, and deletin…

…g files. Also, fixing bugs in the tilemap chip when loading maps smaller than the chip's settings. There are 2 new demoscene projects from AndyFX, which are ports of older PV8 demos. Finally, I added a new parser that looks for png files in a Sprite folder and automatically loads them into memory as Meta Sprites. There is a new RPG8 demo in the game folder showing off how this new parser works.

Cleaning up edit color modal and open modal logic.

Fixing Unity project files, cleaning up image parsers to abstract out…

… color conversion better, and including UnityRunner.zip in final file upload.